Complete role documentation suite per Ansible Galaxy and homelab standards:
- Add role README.md with variable tables, usage examples, and deployment notes
- Add meta/main.yml for Galaxy metadata and collection dependencies
- Add OPENAPPLY-VAULT-REFERENCE.md with vault setup and Proxmox token guide
- Add OPENAPPLY-IMPLEMENTATION-REPORT.md with architecture, validation, and handoff details
Context: Completes the OpenApply LXC deployment implementation from session plan.
This documentation enables users to configure vault secrets, understand role variables,
and execute the two-tier Proxmox provisioning workflow.
Ref: Session plan at /memories/session/plan.md (Phases 1-6 complete)
